Gree JKFD5QSR/Na-E Service Manual
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Gree JKFD5QSR/Na-E Service Manual

Gree JKFD5QSR/Na-E Service Manual

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Change for life
Service Manual
Models:
JKFD5QSR/Na-E、JKFD5CR/Na-E
JKFD7QSR/Na-M、JKFD7CR/Na-M
JKFD15QSR/Na-M、JKFD15CR/Na-M
JKFD20QSR/Na-M、JKFD20CR/Na-M
JKFD25QS2/Na-M、 JKFD25C2/Na-M、 JKFD25SX2/Na-M
JKFD40QS2/Na-M、 JKFD40C2/Na-M、 JKFD40SX2/Na-M
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree JKFD5QSR/Na-E

  • Page 1 Change for life Service Manual Models: JKFD5QSR/Na-E、JKFD5CR/Na-E JKFD7QSR/Na-M、JKFD7CR/Na-M JKFD15QSR/Na-M、JKFD15CR/Na-M JKFD20QSR/Na-M、JKFD20CR/Na-M JKFD25QS2/Na-M、 JKFD25C2/Na-M、 JKFD25SX2/Na-M JKFD40QS2/Na-M、 JKFD40C2/Na-M、 JKFD40SX2/Na-M (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...

  • Page 2: Table Of Contents

    GREE Air-ccoled Closed Control Unit Service Manual Table of Contents ⅠProduct ......................1   1. Naming Convention of Products ....................2  2. Features of Product ........................3  3. System Principle ..........................5  3.1 Flowchart of the System ....................5  3.2 Description of the System ....................5 ...
  • Page 3 GREE Air-ccoled Closed Control Unit Service Manual Ⅲ Maintenance ..................... 88   1.  Malfunction List ........................88  2. Troubleshooting ........................... 93  2.1 High Pressure Protection of Compressor ..............93  2.2 Low Pressure Protection of Compressor ..............94  2.3 Discharge Temp Protection for Compressor ............... 95 ...

  • Page 4: Ⅰproduct

    GREE Air-ccoled Closed Control Unit Service Manual ⅠProduct Indoor Unit Outdoor Unit...

  • Page 5: Naming Convention Of Products

    GREE Air-ccoled Closed Control Unit Service Manual 1. Naming Convention of Products □ □ □ □ Description Option Product Classification JK-Closed Control Air Conditioner Omitted—Water-cooled Packaged Unit F—Air-cooled Split Unit Cooling Method and Structure Y—Ethylene Glycol-cooled Split Unit C—Chilled Water Unit Omitted—Cooling Only Unit (without electric heater)

  • Page 6: Features Of Product

    GREE Air-ccoled Closed Control Unit Service Manual 2. Features of Product Gree JKF Series Air-cooled Closed Control Unit is specially designed for the room where communication equipment, computer, and precise instruments are placed. Applying components with high performance, wide and touchable screen, advanced system design as well as powerful control logic, the unit can efficiently control ambient humidity and keep stable and long-term operation.
  • Page 7 ◆ Multi products Wide cooling range: GREE JKF series air-cooled closed control units include 5kW, 7kW, 15kW, 20kW, 25kW and 40kW units. And also, with combination of modules, customers can easily select proper units according to their demand.

  • Page 8: System Principle

    GREE Air-ccoled Closed Control Unit Service Manual 3. System Principle 3.1 Flowchart of the System Fan Motor Condensate Fan Humidifier Electric Heater Condenser Diverter Evaporator Expansion Valve Solenoid Valve Compressor 3.2 Description of the System Structural features and system layout of JKF Series Air-cooled Closed Control Air Conditioner are illustrated as above.

  • Page 9: Performance Parameters

    GREE Air-ccoled Closed Control Unit Service Manual 4. Performance Parameters Form 1 Model Class Item JKFD5CR/Na-E JKFD5QSR/Na-E Unit Code of Product EJ13000480 EJ13000440 Total Cooling Capacity / Sensible Cooling 5.3/4.8 Capacity(22℃/50%) Total Cooling Capacity / Sensible Cooling 5.5/5.1 Capacity(24℃/17℃) Total Cooling Capacity / Sensible Cooling 5.4/4.9...
  • Page 10 GREE Air-ccoled Closed Control Unit Service Manual Net Weight Liquid Refrigerant mm×pcs Φ9.52×1 Connection Φ12×1 Gas Refrigerant Pipe mm×pcs pipe Method of Connection Flared-fitting Joint Form 2 Model Class Item JKFD7CR/Na-M JKFD7QSR/Na-M Unit Code of Product EJ13000490 EJ13000450 Total Cooling Capacity / Sensible Cooling 6.8/5.8...
  • Page 11 GREE Air-ccoled Closed Control Unit Service Manual 1350 Net Weight Φ9.52×1 Liquid Refrigerant Pipe mm×pcs Conne ction Φ12×1 Gas Refrigerant Pipe mm×pcs pipe Method of Connection Flared-fitting Joint Form 3 Model Class Item JKFD15CR/Na-M JKFD15QSR/Na-M Unit Code of Product EJ13000500...
  • Page 12 GREE Air-ccoled Closed Control Unit Service Manual 1130 Net Weight Φ12×1 Liquid Refrigerant Pipe mm×pcs Conne ction Φ16×1 Gas Refrigerant Pipe mm×pcs pipe Method of Connection Flared-fitting Joint Form 4 Model Class Item JKFD20CR/Na-M JKFD20QSR/Na-M Unit Code of Product EJ13000510...
  • Page 13 GREE Air-ccoled Closed Control Unit Service Manual 1130 Net Weight Φ16×1 Liquid Refrigerant Pipe mm×pcs Conne ction Φ19×1 Gas Refrigerant Pipe mm×pcs pipe Method of Connection Flared-fitting Joint Form 5 Model Class Item JKFD25C2/Na-M JKFD25QS2/Na-M JKFD25SX2/Na-M Unit Code of Product...
  • Page 14 GREE Air-ccoled Closed Control Unit Service Manual 1180 Net Weight Φ12×2 Liquid Refrigerant Pipe mm×pcs Conne ction Gas Refrigerant Pipe mm×pcs Φ16×2 pipe Method of Connection Flared-fitting Joint Form 6 Model Class Item JKFD40C2/Na-M JKFD40QS2/Na-M JKFD40SX2/Na-M Unit Code of Product...
  • Page 15 GREE Air-ccoled Closed Control Unit Service Manual 1080 Dimension 1180 1040 Net Weight Liquid Refrigerant Pipe mm×pcs Φ16×2 Conne Φ19×2 Gas Refrigerant Pipe mm×pcs ction pipe Method of Connection Flared-fitting Joint Notes: 1. This unit was designed, manufactured and tested according to National Standard GB/T 19413-2010.

  • Page 16: Rformance Correction

    GREE Air-ccoled Closed Control Unit Service Manual 5. RFORMANCE CORRECTION 5.1 Correction of Cooling Capacity Under different indoor or outdoor ambient temperatures, the cooling capacity of the unit will be different. The below diagram can be reference when customer select models.

  • Page 17: Coefficient Of Correction Table For Various Conditions Of Installation

    GREE Air-ccoled Closed Control Unit Service Manual JKFD40XXX Cooling capacity correction JKFD25XXX Cooling capacity correction 28(50%) 26(50%) 24(17℃) 28(50%) 22(50%) 24(45%) 26(50%) 24(17℃) 24(45%) 20(50%) 22(50%) 20(50%) 18(50%) 18(50%) 17(50%) 17(50%) OUD air inlet dry-bulb temperature( ℃） OUD air inlet dry-bulb temperature( ℃）...
  • Page 18 GREE Air-ccoled Closed Control Unit Service Manual The relative equivalent length of elbow and oil loop Outside Diameter of Connecting Pipe(mm) Oil Loop (m) Elbow Ф9.52 Ф12 0.25 Ф16 Ф19 0.35 Ф22 Note: The equivalent pipe length equals the length of straight pipe plus the equivalent length of...

  • Page 19: Installation Of The Unit

    GREE Air-ccoled Closed Control Unit Service Manual 6. Installation of the unit 6.1 Installation Diagram of the Complete Unit The complete unit consists of outdoor unit and indoor unit, which is shown as below: 6.2 Outline Dimension of the Unit 6.2.1 Indoor Unit...
  • Page 20 GREE Air-ccoled Closed Control Unit Service Manual (The picture is for a reference only and the actual item is the standard. Unit: mm) ◆ Outline Dimension of Indoor units of JKFD5 and JKFD7 Series (Top Air Outlet) Front side Back side Right side ◆...
  • Page 21 GREE Air-ccoled Closed Control Unit Service Manual ◆Outline Dimension of Indoor Units of JKFD15 and JFKD20 Series (Top Air Outlet) Back side Right side Front side ◆Outline Dimension of Indoor Units of JKFD25 Series (Direct Air Supply) Right Side Front Side...
  • Page 22 GREE Air-ccoled Closed Control Unit Service Manual ◆Outline Dimension of Indoor Units of JKFD25 Series (Top Air Outlet) Right Side Front Side Back Side ◆Outline Dimension of Indoor Units of JKFD25 Series (Bottom Air Outlet) Right Side Front Side Back Side...
  • Page 23 GREE Air-ccoled Closed Control Unit Service Manual ◆ Outline Dimension of Indoor Units of JKFD40 Series (Direct Air Supply) Right Side Front Side Back Side 2480 ◆ Outline Dimension of Indoor Units of JKFD40 Series (Top Air Outlet) Right Side...
  • Page 24 GREE Air-ccoled Closed Control Unit Service Manual ◆ Outline Dimension of Indoor Units of JKFD40 Series (Bottom Air Outlet) Right Side Front Side Back Side 2480 6.2.2 Outdoor Unit ◆ Outline Dimensions of JKFD5P/Na-E(O) and JKFD7P/Na-E(O) (The picture is for a reference only and the actual item is the standard. Unit: mm)
  • Page 25 GREE Air-ccoled Closed Control Unit Service Manual ◆ JKFD15P/Na-M(O) 、 JKFD20P/Na-M(O) ◆ JKFD13/NaA-M(O) ◆ JKFD19/NaA-M(O)

  • Page 26: Installation Dimension And Space

    GREE Air-ccoled Closed Control Unit Service Manual 6.3 Installation Dimension and Space 6.3.1 The Installation of Indoor Unit ◆ Direct Air Supply (with cowl) Ceiling No Special Requirement Wall Face On Distance 8 0 0 8 0 0 > >...
  • Page 27 GREE Air-ccoled Closed Control Unit Service Manual The Flange Size of Air Outlet on Top of the unit Model JKFD5QSR/Na-E(I) 246 318 286 131 JKFD7QSR/Na-M(I) 246 288 276 152 JKFD15QSR/Na-M(I) 306 368 363 140 JKFD20QSR/Na-M(I) 260 461 405 108 JKFD25QS2/Na-M(I) 384 459 403 正面...
  • Page 28 GREE Air-ccoled Closed Control Unit Service Manual 6.3.2 Installation of Outdoor Unit ◆ Disassembly of Outdoor Unit Local Room of M6 (24 sets) Components Nut with Washer M6 (16) Support Leg (4) Bracket (4) Disassembly Diagram of Horizontal Installation Disassembly Diagram of Vertical Installation...
  • Page 29 GREE Air-ccoled Closed Control Unit Service Manual Mounting Hole on Base ◆ JKFD13/NaA-M(O) 、 JKFD19/NaA-M(O) JKFD15P/Na-M(O), JKFD20P/Na-M(O)
  • Page 30 GREE Air-ccoled Closed Control Unit Service Manual ◆ Installation of Single Unit Obstacle Wall Face 1 0 0 0 Air Outlet > 1 0 0 0 > Wall Face Ground Electric Box and The Exit of Tube are On This Side...

  • Page 31: Requirements Of Installation

    GREE Air-ccoled Closed Control Unit Service Manual ◆ Parallel Installation of Multi-units 1 0 0 0 2 0 0 0 1 0 0 0 > > > Ground Horizontal Installation of Multiple Units 3 8 0 0 1 0 0 0...
  • Page 32 GREE Air-ccoled Closed Control Unit Service Manual installed, debugged, operated as well as maintained according to this manual, the unit can work in proper state whose working life can also lengthen. In order to ensure the normal running and prevent the malfunction of the unit, the installation must be executed by experienced technicians with the knowledge of air-conditioner.
  • Page 33 GREE Air-ccoled Closed Control Unit Service Manual space for repairing, and also shall take the convenience of pipes connection between indoor and outdoor units into account. (3) The outdoor unit shall be installed and securely fixed in the stable and firm supporting...
  • Page 34 GREE Air-ccoled Closed Control Unit Service Manual should be small as much as possible but cannot less than 1.5 times of diameter of the pipe. If the installation length exceeds the above requirements, please consult the manufacturer. Long connecting pipe accessory are needed.
  • Page 35 GREE Air-ccoled Closed Control Unit Service Manual Make sure that there is no leakage. When the compressor has stopped, the required amount of R22 refrigerants should be added into the valves of the indoor. If refrigerants cannot be added into required amount quickly due to the increased pressure in the pipe, keep the unit ON, and charge refrigerants into the fluorine-feeding nozzle in the inhalation tube of the indoor unit.

  • Page 36: Electric Installation

    GREE Air-ccoled Closed Control Unit Service Manual 7. Electric installation 7.1 Electrical Installation 7.1.1 General Connection Diagram Input Power Switch Residual Current Circuit Breaker Single-phase Single-phase/Three-phase 7.1.2 External Wiring Diagram Input Power Supply Power Supply Terminal Input Power Supply of Indoor Unit...
  • Page 37 GREE Air-ccoled Closed Control Unit Service Manual Input Power Supply Power Supply Terminal of Indoor Unit Input Power Supply Power Supply Terminal of Outdoor Unit Black Black JKFD7XXX Input Power Supply Power Supply Terminal Input Power Supply of Indoor Unit...
  • Page 38 GREE Air-ccoled Closed Control Unit Service Manual Power Supply Terminals Input Power Supply of The Indoor Unit Patchboard Yellow/Green Power Supply Terminals of The Outdoor Unit 2 Brown Blue Patchboard Brown Patchboard Blue Yellow/Green Power Supply Terminals of The Outdoor Unit 1 Patchboard JKFD25XXX 、...
  • Page 39 GREE Air-ccoled Closed Control Unit Service Manual 7.1.3 Wiring Requirements ◆ Layout of Electric Wires (1) The layout should comply with related national regulations for wiring. (2) Rated voltage and dedicated power supply of the unit are required to apply.

  • Page 40: Matching Form Of Power Cord And Air Switch

    GREE Air-ccoled Closed Control Unit Service Manual (1) Since air conditioner is type I appliance, please do conduct reliable earth treatment. The yellow-green wire inside unit is earth wire, which can not be used for other purpose and further not be cut off. Don’t fix it with tapping screw to avoid electric shock.
  • Page 41 GREE Air-ccoled Closed Control Unit Service Manual -linked cable with PE insulation and PVC sheath), out-spread on 90 (e.g. copper core cross ℃ the surface of slot (GB/T 16895.15); If condition changes, please adjust specifications according to national standard; ③ Specifications of circuit breaker is based on the working condition where ambient temperature of circuit breaker is 30 ℃...

  • Page 42: Ⅱ Control

    GREE Air-ccoled Closed Control Unit Service Manual Ⅱ Control 1 Control of the Unit 1.1 General Control When the unit is energized, the system starts to detect each part. If there is malfunction, malfunction code will be displayed and relevant procedure will be entered. If there is not malfunciton, the unit will operate according to command from display panel.
  • Page 43 GREE Air-ccoled Closed Control Unit Service Manual Power Recovery Judge malfunction processing Timer on or off process Timer on or not Turning off process Turning off manual Auto/manual Manual process auto Auto control process Malfunction Recovery processing Cut off power...

  • Page 44: Introduction To Key Control Logic Of The Unit

    GREE Air-ccoled Closed Control Unit Service Manual 1.2 Introduction to Key Control Logic of the Unit （ 1 ） Control of Indoor Fan When pressing ON button or timer on is reached, the fan will operate in set time. When the unit is turned off or timer off is reached, indoor fan will be turned off in 3 minutes.

  • Page 45: Controller

    GREE Air-ccoled Closed Control Unit Service Manual 2. Controller This touch screen adopts high-performance processor and window-operation system. The running state of the system is described by text, diagram or curve. All kinds of running parameters can be flexibly set by the unit to optimum state and make the man-machine conversion come true.
  • Page 46 GREE Air-ccoled Closed Control Unit Service Manual Homepage User Setting Run Status Event Log Parameter System Info. Function of each button is as follows: “ Home ” ： It is touched to enter the Homepage “ User Setting ”: It can be touched to enter the interface for the setting of system temperature and humidity, status of each module, clock and timer.

  • Page 47: User Setting Interface

    GREE Air-ccoled Closed Control Unit Service Manual “ ON/OFF ”: As it is touched, the system will issue a command to change the ON/OFF state. The hint information on the button will accordingly change to the current controlled running state of entire module.
  • Page 48 GREE Air-ccoled Closed Control Unit Service Manual Max value of return air humidity setting=upper limit setting of return air humidity - 3 , ℃ minimum value of return air humidity setting=lower limit setting of return air humidity+ 3 , ℃...
  • Page 49 GREE Air-ccoled Closed Control Unit Service Manual “ . ”: Decimal point, which for its input. “ ES ”: By touching to cancel the input and the keyboard will disappear. “ CR ”: By touching to erase the number inputted previously to input afresh.
  • Page 50 GREE Air-ccoled Closed Control Unit Service Manual “ Auto/Manual ”: When “manual” is displayed, the module is in the manual operation state. By touching it, the state will switch to auto running. But the reverse setting should be set in the “...

  • Page 51: Running Status Interface

    GREE Air-ccoled Closed Control Unit Service Manual 2.4 Running Status Interface （ 1 ） Output Status View This interface displays the running information of each module (e.g. Connected /Disconnected, On/Off, Entire control/ Independent operation, Auto operation / Manual operation, Normal / Error, Emergency).
  • Page 52 GREE Air-ccoled Closed Control Unit Service Manual on/off status of indoor fan, compressor 1 and compressor 2, and the pulse of electronic expansion valve. On the interface of “Output Status View”, press “State” and then enter the interface of running data inquiry, the pulse of electronic expansion valve is displayed. After entering the homepage, the pulse of EXV will not be displayed.
  • Page 53 GREE Air-ccoled Closed Control Unit Service Manual （ 3 ） History Curve Inquiry The interface of running curve inquiry displays temperature curve and humidity curve. The horizontal abscissa represents time whereas the vertical ordinate represents temperature or humidity. Red line indicates the return air temperature and the pink line indicates the return air humidity, with the current temperature or humidity value showing at the bottom of the curve diagram.

  • Page 54: Event Log

    GREE Air-ccoled Closed Control Unit Service Manual History curve of a certain day can be viewed by selecting the date. 2.5 Event Log （ 1 ） Current Error Slightly press “ Event Log ” and then the interface of current error will be displayed. This interface shows the current alarms of the unit, which can be viewed one by one by touching the right and lower scroll bars.

  • Page 55: Parameter Setting

    GREE Air-ccoled Closed Control Unit Service Manual will change to yellow. When error is recovered, the color will change to green. （ 3 ） History Event Slightly press the button “History Event” to enter the interface of history event. This interface displays the record of events that occur before the unit is last turned off.
  • Page 56 GREE Air-ccoled Closed Control Unit Service Manual button “Close” and then touch the button “Parameter Setting” to view or operate the interface of “System Parameter Setting”, “Sub-Module Setting”, “Module Service Time”or “Manual Debugging” （ 1 ） System Parameter Setting Slightly press the button “Parameter Setting” to set parameters for the system of master module.
  • Page 57 GREE Air-ccoled Closed Control Unit Service Manual /Y%, if the corrected value of temperature probe is set to be x ℃ , the temperature tested by the unit is X+x ℃ ; if the corrected value of humidity probe is set to be y%, the humidity tested by the unit is Y+y%.

  • Page 58: System Information

    GREE Air-ccoled Closed Control Unit Service Manual Slightly press the button “Manual Debug” to turn on or off the parts of each module. Slightly touch the button “ON/OFF” on the right side of the running part to switch to the manual on/off status of the corresponding part.
  • Page 59 GREE Air-ccoled Closed Control Unit Service Manual Language of the touch screen can be selected on this page. Slightly touch the backlight time input box to determine the backlight time of the touch screen. Slightly press “ ON ” or “ OFF ” button to turn on or off the keypad tone.
  • Page 60 GREE Air-ccoled Closed Control Unit Service Manual Press “Enter” and if password is valid, it is modified successfully. If not, input password again. （ 3 ） Maintenance Notice Slightly touch the button “Maintenance Notice” to switch to the page of maintenance notice.
  • Page 61 GREE Air-ccoled Closed Control Unit Service Manual Slightly touch the button “ System Info. ” And the password input interface will pop up. Input password “555555” and then you can clear event, clear curve and modify PWD. Slightly touch the button “ Clear Event ” and click “Enter” on the pop-up box to clear all...

  • Page 62: Touch Screen Caring, Humidifier Maintenance And Installation Notice

    GREE Air-ccoled Closed Control Unit Service Manual Slightly press the button “ Clear Curve ” and click “Enter” on the pop-up box to clear all historical curve records. Click “ESC” to return. Slightly press the button “ Maintenance Notice ” and input password “330000” on the pop-up box of energy saving mode setting interface to set energy saving mode.
  • Page 63 GREE Air-ccoled Closed Control Unit Service Manual...

  • Page 64: The Instruction Of Dip Switch

    GREE Air-ccoled Closed Control Unit Service Manual 3. The Instruction of DIP Switch Units Mainboard DIP Switch Diagram 3.1 Address Code Four modules can be combined to run integratedly by 2-bit setting address of DIP switch on SA1 in mainboard of each module. Code is valid before energization and its change is invalid after energization.

  • Page 65: Capacity Code

    GREE Air-ccoled Closed Control Unit Service Manual The DIP switch at the position ON represents “0” and at digital terminal represents “1”. 3.2 Capacity Code Capacity code of the unit is the 2-bit DIP switch on SA2 in the mainboard which has been set and fixed by the factory.

  • Page 66: Remote Monitoring

    Windows Vista Business Windows Vista Enterprise Windows Vista Ultimate Windows 7 4.1.2 Installation, operation and uninstall ● Install If you are installing Gree AC Eudemon 2009, you must run Setup as an administrator, put the CD in CD-ROM, run the autorun.exe.
  • Page 67 4. Install Gree AC Eudemon 2009 Click “help” for installation flow. ● Run Click “start→program→GREE→ Gree AC Eudemon 2009” or double-click desktop to start this software, the interface is as following: ● Uninstall Double-click the system icon in Control Panel to uninstall this program.

  • Page 68: Operation

    4.2 Operation 4.2.1 Login Window Run Gree AC Eudemon 2009.exe as an administrator in the installation catalogue. (The shortcut of "AC Eudemon 2009" can be found in Menu Bar or desktop) The pop-up interface of the software will be as below: Click Main Menu->System ->The customer login.
  • Page 69 GREE Air-ccoled Closed Control Unit Service Manual 4.2.2 The Engineering Install Click Main Menu->System->The engineering install, and then fill in the engineering information. Click "OK" to finish the configuration. 4.2.3 System Configuration Click Main Menu->System->The system install and the following interface will show.
  • Page 70 GREE Air-ccoled Closed Control Unit Service Manual Set parameters as the following interface and click Add button. Overtime means after software sending a request command. Communication module should give a response in 1500ms . this value can be changed...
  • Page 71 GREE Air-ccoled Closed Control Unit Service Manual Now,the system support Com1 and Modbus. 4.2.4 Bus Configuration Click Main Menu->System->The bus install and the interface of bus configuration will show. Select the COM number in "COM". COM1 is used in this example. Then input "Bus1" in "Bus Identity"...
  • Page 72 GREE Air-ccoled Closed Control Unit Service Manual 4.2.5 Automatic Examination ● Configuration of automatic examination: Click Main Menu->System->The equipments examines automatically. In this example, COM(1) and Modbus are selected as the above figure and then click Save. ● Automatic examination: click Main Menu->Control->Automatic Examination and the system...
  • Page 73 GREE Air-ccoled Closed Control Unit Service Manual ● The result of Automatic examination in the example is as below (pay attention to the networkview on the left): So far, the equipment is added successfully. Note: Unit installation sketch is as following, please make sure the installation is complete...
  • Page 74 GREE Air-ccoled Closed Control Unit Service Manual 4.2.6 Equipment Management Rename the equipment: left click Equipment to select "Rename". Fill in the name "Closed Control Air Conditioner ".(the name is decied by yourself)
  • Page 75 GREE Air-ccoled Closed Control Unit Service Manual The result is as below: 4.2.7 Connect Equipments ● Link management: Click Main Menu->System->Connect management (COM1 is applied in this example) and then click "OK".
  • Page 76 GREE Air-ccoled Closed Control Unit Service Manual ● Start Communicating: Click Main Menu->Control->Link an equipments and the system can communicate with the unit. In this case, you can check the data of units. 4.2.8 Control Unit ● Left click any Device in Module(1), select "The machine set control" in popup menu after right click ，...
  • Page 77 GREE Air-ccoled Closed Control Unit Service Manual Device(4) in Module(1), when the check box before “No” is selected, the setting information in related blue frame will be sent to the unit after pressing “OK”, otherwise the settings in blue frame is invalid.

  • Page 78: Display Interface

    GREE Air-ccoled Closed Control Unit Service Manual 4.3 Display interface Main interface consists of “menu”, “tool”, “network view”, “parameter view”, “system information view” and “status”. Menu: consist of “system”, “view”, “control” and “help” these four commands, there’s drop-down menu for every command to realize setting, operation, management and help...
  • Page 79 GREE Air-ccoled Closed Control Unit Service Manual viewing. The screenshot of every drop-down menu is as following: “system” “view” “control”...

  • Page 80: Unit And Equipment Management

    GREE Air-ccoled Closed Control Unit Service Manual “help” Tool: The buttons on “tool bar” are those setting and operation usually used in main menu. From the left to right are: the customer login, system configuration, connect, disconnect, unit control, connection management, about.
  • Page 81 GREE Air-ccoled Closed Control Unit Service Manual After self-checking is completed, the result will be showed on “network” of “network view”. If the result is conflict with present equipment, following dialog box will be popup and user has to select one of the result (it is advised to select the last self-checking result).
  • Page 82 GREE Air-ccoled Closed Control Unit Service Manual Click Main Menu->Control->Link an equipments ， the system will start checking according to saved connection. Related parameter will be displayed if the communication is normal. Click Main Menu->Control->Break to open a conjunction , the system will stop monitoring to all the equipments.
  • Page 83 GREE Air-ccoled Closed Control Unit Service Manual “bedroom”, it is named by user. After the equipment is added, user can specify the building, floor and room according to actual installation position for convenient monitoring. The unit information can be review at “position”...

  • Page 84: Parameter Control

    GREE Air-ccoled Closed Control Unit Service Manual 4.4.4 Unit and equipment names ”Software’s default name: “module (address number)” for unit/main module, “equipment (address number)” for submodule. Right click equipment and select “rename” to input name in popup dialog box, click “OK” to confirm.
  • Page 85 GREE Air-ccoled Closed Control Unit Service Manual Control the main parameter of unit (main module) and equipment (submodule) through this interface. Touch screen”: once select “shield” and send command, the touch screen of main module could be shielded and “touch screen shielded” will be displayed on homepage of touch screen, then the parameter could not be set through touch screen.
  • Page 86 GREE Air-ccoled Closed Control Unit Service Manual Timer adding: set related timer parameter, add control command and click “add” to confirm. Timer deleting: select timer command in “view section” and click “delete” to confirm. All timer controls could be showed at “view section”, if one of the timer command is overtime, it will marked with green.

  • Page 87: Running Parameter View

    GREE Air-ccoled Closed Control Unit Service Manual 4.6 Running parameter view 4.6.1 Unit and equipment running parameter Click main module (unit) in network view during running communicating status of software, related parameter of main module and its submodule will be displayed, see following picture:...

  • Page 88: User And Role Management

    GREE Air-ccoled Closed Control Unit Service Manual 4.6.2 Malfunction display During running and communication of monitoring software, if malfunction of the unit or submodule (equipment) is detected, the related malfunction information will be displayed in “malfunction record” of “system information”.
  • Page 89 GREE Air-ccoled Closed Control Unit Service Manual Add user: fill a different name with password and user, then click “add”. Modify password: select a user in “all users”, type in the original password and new password, click “modify password”. Delete user: Select a user in “all users” and click “delete”...

  • Page 90: Others

    Delete role: select a role in “role list” and click “delete”. Note: the user is using cannot be deleted. 4.8 Others 4.8.1 Information inquiry Click main menu -> help -> about Gree AC Eudemon 2009 ， following dialog box will be popped up.

  • Page 91: Ⅲ Maintenance

    GREE Air-ccoled Closed Control Unit Service Manual Ⅲ Maintenance 1. Malfunction List Malfunction Signal Source Control logic When phase sequence has malfunction for continuous 3 seconds, the complete unit will stop and all loads will Phase reversal be turned off (without restriction of set delay time). The...
  • Page 92 GREE Air-ccoled Closed Control Unit Service Manual of return air. (If a module has malfunction of probe of return air, the detection of the overheating of return air will be shielded). When compressor operates, if compressor discharge temperature is higher than set value for continuous 30...
  • Page 93 GREE Air-ccoled Closed Control Unit Service Manual to clear the malfunction signal. When overload compressor detected continuous 3s, compressor and corresponding loads will be turned off without being restricted by set delay time. The outdoor fan will be turned off 5 seconds later, the corresponding malfunction will be displayed on display and alarm also will be given out.
  • Page 94 GREE Air-ccoled Closed Control Unit Service Manual turned off. The compressor and corresponding load, electric heater and humidifier will be turned off according to manual turning off sequence. The outdoor fan will be turned off in 5s. The corresponding malfunction will be displayed and alarm will be given out.
  • Page 95 GREE Air-ccoled Closed Control Unit Service Manual malfunction will be displayed, and alarm will be given out. Manually turn off and de-energize the unit to clear the malfunction signal. there communication malfunction between sub-module and main module for 30s, the indoor fan will operate once the unit is started up while it will be turned off once the unit is turned off.

  • Page 96: Troubleshooting

    GREE Air-ccoled Closed Control Unit Service Manual temp malfunction will be displayed, and alarm will be given sensor/outlet out. If the malfunction is automatically removed, the pipe of compressor resumes operation and malfunction code evaporator will be removed. Select malfunction resetting or...

  • Page 97: Low Pressure Protection Of Compressor

    GREE Air-ccoled Closed Control Unit Service Manual 2.2 Low Pressure Protection of Compressor...

  • Page 98: Discharge Temp Protection For Compressor

    GREE Air-ccoled Closed Control Unit Service Manual 2.3 Discharge Temp Protection for Compressor 2.4 Overload Protection of Compressor...

  • Page 99: Overload Protection Of Indoor Fan

    GREE Air-ccoled Closed Control Unit Service Manual 2.5 Overload Protection of Indoor Fan 2.6 Temperature Protection of Electric Heater...

  • Page 100: Low Current Malfunction, Drainage Malfunction And High Water Level Malfunction Of Humidifier

    GREE Air-ccoled Closed Control Unit Service Manual 2.7 Low Current Malfunction, Drainage Malfunction and High Water Level Malfunction of Humidifier...

  • Page 101: Low Air Pressure Malfunction Of Indoor Fan

    GREE Air-ccoled Closed Control Unit Service Manual 2.8 Low Air Pressure Malfunction of Indoor Fan...

  • Page 102: Alarm For Blocking Filter

    GREE Air-ccoled Closed Control Unit Service Manual 2.9 Alarm for Blocking Filter...

  • Page 103: Case Study

    GREE Air-ccoled Closed Control Unit Service Manual 3. Case Study Case 1 Malfunction Phenomenon : Low pressure protection occurs after the unit operates normally in cooling mode for a period of time. Possible causes: pressure controller is abnormal; parameter setting of touch screen is abnormal;...
  • Page 104 GREE Air-ccoled Closed Control Unit Service Manual on the humidifier. Measure current for humidifying and compare it with that in touchable screen. At the same time, observe water level of humidifier tank and status of valve on screen. In fact, the current measured is almost the same with that displayed on screen.
  • Page 105 GREE Air-ccoled Closed Control Unit Service Manual Possible Causes: （ 1 ） Mainboard is burnt out; （ 2 ） Protective tube is damaged; （ 3 ） Wrong wiring Possible causes: remove electric box to check the mainboard. If it is burnt out, the mainboard shall be replaced.

  • Page 106: Power Distribution Of The Unit

    GREE Air-ccoled Closed Control Unit Service Manual 4. Power Distribution of the Unit 4.1 Power Distribution Diagram 4.1.1 Phase Reversal Protector （ 1 ） Protection conditions: Input terminal of power supply for the protector is phase reversal; （ 2 ） Result of activation: The complete unit is de-energized and can’t be turned on;...
  • Page 107 GREE Air-ccoled Closed Control Unit Service Manual （ 3 ） Treatment: During normal operation, when the temperature of a controlled part reaches the preset value, the temp sensor whose activation temperature is fixed or adjustable will cut on or off the circuit. It can be automatically or manually reset.

  • Page 108: Circuit Diagram

    GREE Air-ccoled Closed Control Unit Service Manual Circuit Diagram The circuit diagram is for reference only and the circuit diagram on the unit is the standard. 4.2.1 Indoor Unit JKFD5XXX(I) Main board Indoor Humid ifier Heat Indoor Comp Heat Comp...
  • Page 109 GREE Air-ccoled Closed Control Unit Service Manual 4.2.2 Indoor Unit JKFD7XXX(I) Main Indoor board Humid Heat ifier Indoor Comp Heat Comp SAT1 SAT2 SAT3 FUT 1 SAT7 SAT4 FUT 2 SAT8 SAT5 FUT 3 SAT9 SAT6...
  • Page 110 GREE Air-ccoled Closed Control Unit Service Manual 4.2.3 Indoor Unit JKFD15XXX(I)、JKFD20XXX(I)
  • Page 111 GREE Air-ccoled Closed Control Unit Service Manual 4.2.4 Indoor Unit JKFD25C2/Na-M(I)、JKFD25QS2/Na-M(I)
  • Page 112 GREE Air-ccoled Closed Control Unit Service Manual 4.2.5 Indoor Unit JKFD25SX2/Na-M(I)
  • Page 113 GREE Air-ccoled Closed Control Unit Service Manual 4.2.6 Indoor Unit JKFD40XXX(I)
  • Page 114 GREE Air-ccoled Closed Control Unit Service Manual 4.2.7 Indoor Unit JKFD5P/Na-E(O)、JKFD7P/Na-E(O) EXTERNAL ENVIRONMENT TEMP SENSOR...
  • Page 115 GREE Air-ccoled Closed Control Unit Service Manual 4.2.8 Outdoor Unit JKFD13/NaA-M(O)、JKFD19/NaA-M(O)
  • Page 116 GREE Air-ccoled Closed Control Unit Service Manual 4.2.9 Outdoor Unit JKFD15P/Na-M(O)、JKFD20P/Na-M(O) AC-L1 AC-L2 AC-L3...

  • Page 117: Introduction For Main Electric Parts

    GREE Air-ccoled Closed Control Unit Service Manual 4.3 Introduction for Main Electric Parts Name Picture Function AC contactor controls the power supply for compressor, indoor fan, outdoor fan, Electric heater pipe, electrode humidifier. When working power terminal contactor AC contactor...
  • Page 118 GREE Air-ccoled Closed Control Unit Service Manual When thermostat connects to circuit, if controller gives alarm, electric heat doesn’t work and fusible cutout doesn’t have malfunction, the thermostat may Thermostat have malfunction. Check if it is still conductive universal meter. If it is conductive, it is good while if not, it is damaged.

  • Page 119: Disassembly And Assembly Of The Unit

    GREE Air-ccoled Closed Control Unit Service Manual 5. Disassembly and Assembly of the Unit 5.1 Introduction to Key Parts Picture Name Function Core of cooling system; Compressor provides energy for cyclic flow of refrigerant Throttle device inside the cooling system. Throttle...
  • Page 120 GREE Air-ccoled Closed Control Unit Service Manual Humidifier Humidify the air Make air circularly flow forcely exchange heat with evaporator. The motor of outer rotor type Centrifugal fan centrifugal fan is built-in which doesn’t need to be maintained during operation.

  • Page 121: Assembly And Disassembly Of Parts

    GREE Air-ccoled Closed Control Unit Service Manual 5.2 Assembly and Disassembly of Parts 5.2.1 Compressor （ 1 ） Removal of Compressor ◆ Cut off power supply of the unit; ◆ Reclaim the refrigerant; ◆ Remove suction and discharge pipes of compressor ◆...
  • Page 122 GREE Air-ccoled Closed Control Unit Service Manual 5.2.3 Humidifier Humidifier Consists of three main parts: humidifying tank, discharge, valve and feed valve （ 1 ） Replace humidifying tank: Disassembly steps: ◆ Catch joint of electrode and push it downward for 2mm along the steam cylinder.

  • Page 123: Exploded View And Parts List

    GREE Air-ccoled Closed Control Unit Service Manual 6. Exploded View and Parts List （1）Indoor Unit JKFD5QSR/Na-E(I)、JKFD5CR/Na-E(I) ◆ Exploded view of JKFD5QSR/Na-E(I) （ applicable to JKFD5CR/Na-E(I) ） 4 5 6 78 9 10 11 12 1 2 3 13 14 15 1718 19 20 21 ◆...
  • Page 124 46028251 （ Refer to actual products for unit structure and materials. ） ◆ Parts list of model JKFD5CR/Na-E(I) Compared with model JKFD5QSR/Na-E(I) ， it just adds false ogive. So please refer to parts list of model JKFD5QSR/Na-E(I). （2）Indoor Unit JKFD7CR/Na-M(I)、JKFD7QSR/Na-M(I)
  • Page 125 GREE Air-ccoled Closed Control Unit Service Manual 4 5 6 78 9 10 11 12 1 2 3 13 14 15 1718 19 20 21 ◆ Parts list of modle JKFD7QSR/Na-M(I) Part Name Material Code Q’ty Display Board 300001000009 Electric Cabinet Assy...
  • Page 126 GREE Air-ccoled Closed Control Unit Service Manual Compressor Gasket 76812203 Package Base 50233733 Electrical Heater(Compressor) 7651521237 Compressor and Fittings 00203711 Gas-liquid Separator 07424146 Terminal Board 42010052 Water Immersion Switch 45020501 Square Valve 07130366 Strainer 07213051 Electric Expansion Valve Sub-Assy 030026000057...
  • Page 127 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts' list of JKFD15QSR/Na-M(I) Part Name Material Code Q’ty Display Board 300001000009 Thick Filter 710024000005 Electromagnetic water valve '43042800025 Magnet Coil (electromagnetic valve) '43042800026 Humidifier Assy 000156000002 Detecting plate '30270005 Water Immersion Switch...
  • Page 128 GREE Air-ccoled Closed Control Unit Service Manual Electric Heater 32105200001 Evaporator Assy 011001000069 Pressure difference switch sub-assy 2 '46028000001 Centrifugal Fan sub-assy 150184042 Terminal Board '42010052 Electric Box Assy ‘100002000146 ◆ Parts' list of JKFD15CR/Na-M(I) Compared with model JKFD15QSR/Na-M(I) ， it just add false ogive. So please refer to parts list of model JKFD15QSR/Na-M(I).
  • Page 129 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts’ list of JKFD20CR/Na-M(I) Compared with model JKFD20QSR/Na-M(I) ， it just add false ogive. So please refer to parts list of model JKFD20QSR/Na-M(I). （4）Indoor Unit JKFD25C2/Na-M(I)、JKFD25QS2/Na-M(I) ◆ Exploded view of JKFD25QS2/Na-M(I) （ applicable to JKFD25C2/Na-M(I) ）...
  • Page 130 GREE Air-ccoled Closed Control Unit Service Manual Wind shield 01353742P Cross beam(up) 01873809P Mounting rack of fan 01323769P Column (upper) 01853762P Column sub-assy (front left) 01853751 Left panel 01643727 Longitudinal beam (left) 01873806 Column sub-assy (rear left) 01853752 Top panel...
  • Page 131 GREE Air-ccoled Closed Control Unit Service Manual Cross beam2 01873808P Air-return pipe 3 04653783 Fixing bea 1 01873784 Water tray 01283781 Fixing part 1 of evaporator 01093749P Electric cabinet 01393758P Cross beam 01873807P Pressure difference switch1 01325236 ◆ Parts' list of JKFD25C2/Na-M(I) Compared with model JKFD25QS2/Na-M(I) ，...
  • Page 132 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts' list of JKFD25SX2/Na-M(I) Part Name Material Code Q’ty Column (lower) 01853777P Electric control door 01393753P Mounting plate of electric part 01323785 Panel 01543800 Cross beam(middle) 01883704P Touch screen ZE130 35018017 Pressure difference switch2...
  • Page 133 GREE Air-ccoled Closed Control Unit Service Manual Centrifugal fan 15403716 SYB-355II(1.8-6) Base 01283799 Electric cabinet 01393751P Pressure difference switch1 01325236 （6）Indoor Unit JKFD40C2/Na-M(I)、JKFD40QS2/Na-M(I) ◆ Exploded view of JKFD40QS2/Na-M(I) （ applicable to JKFD40C2/Na-M(I) ） ◆ Parts' list of JKFD40QS2/Na-M(I) Part Name Material Code Q’ty...
  • Page 134 GREE Air-ccoled Closed Control Unit Service Manual Column (middle) 01853767P Panel (front middle) 01543803 Cross beam(up) 01873810P Longitudinal beam (left) 01873812 Column (upper) 01853765P Column (left) 01853768P Centrifugal fan 150184066 Left panel 01643727 Evaporator 01023727 Top panel 01263744 Top panel2...
  • Page 135 GREE Air-ccoled Closed Control Unit Service Manual Liquid inlet pipe sub-assy 2 04323853 Base 01283786 Water tray 01283789P Soleplate 2 of evaporator 01093736P Packing base(wood) 50233727 Cross beam(lower) 01873811P Column (lower) 01853766P Electric cabinet 01393773P Pressure difference switch1 01325236 ◆ Parts' list of JKFD40C2/Na-M(I) Compared with model JKFD40QS2/Na-M(I) ，...
  • Page 136 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts' list of JKFD40SX2/Na-M(I) Part Name Material Code Q’ty Pressure difference switch1 01325236 Centrifugal fan SYB-355II(1.5-6) 15703707 Mounting plate of electric part 01323764 Electric control door 01393753P Electric heater BKR 32103703 9000W/380V...
  • Page 137 GREE Air-ccoled Closed Control Unit Service Manual Column (fixing beam) 01853739P Discharge pipe1 04633730 Level glass sub-assy 1 22453701 Air-return pipe1 04673738 Level glass sub-assy 2 22453702 Installation beam of compressor 01873787P Cut-off valve 2 07333750 Cut-off valve 2 07333751...
  • Page 138 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts' list of JKFD5P/Na-E(O) Part Name Material Code Q’ty Front Grill 01575200001 Connection Sheet Assy 01344100091 Cabinet 01514100002P Handle 26904100016 Diversion Circle 10474100001 Front Side Plate 01314100012P Axial Flow Fan 10338731 Brushless DC Motor...
  • Page 139 GREE Air-ccoled Closed Control Unit Service Manual Sensor (High Pressure) 322101032 Square Valve 07138800 Sealing Cap of Joint 06640104 Square Valve 07130366 Rear Side Plate 01314100014P Chassis Sub-assy 01194100051P Right Connection Board 01344100003P Drainage Connecter 06123401 Drainage hole Cap 06813401...
  • Page 140 GREE Air-ccoled Closed Control Unit Service Manual RGE-Z1Q4-7 15403714 Rear side plate 01313732P Rear cover plate 01263730P Connecting part 01343747 ◆ Parts' list of JKFD19/NaA-M(O) Part Name Material Code Q’ty Side plate sub-assy 01313735P Support leg 01893728P Support stand 01803767P...
  • Page 141 GREE Air-ccoled Closed Control Unit Service Manual ◆ Parts' list of JKFD15P/Na-M(O) 、 JKFD20P/Na-M(O) Part Name Material Code Q’ty Blower for Axial Fan Sub- Assy 15403700028 Baffle Plate 012109000020 Cut-off valve sub-assy 1 030057000044 Square Valve 07130128 Square Valve 07138800...
  • Page 142 Add: West inji Rd, Qianshan,Zhuhai,Guangdong,China,519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com For continuous improvement in the products, Gree reserves the right to modidy the product specification and appearance in this manual without notice and without incurring any obligations.

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